Abstract

Three novel Keggin arsenomolybdates with transition metal modifying caps, (Hbimb)(H2bimb)[AsMoVI8VV4Co2O40] (1), (Hbimb)2(H2bimb)0.5[AsMoVI8VV4Cu2O40]·1.5H2O (2), and [CuI(imi)2][{CuI(imi)2}4{AsMoV6VVI6O40(VIV2O2)}] (3) (bimb = 1,4-bis(imidazol-l-yl)butane; imi = imidazole), were obtained via altering the solution pH and the organic ligands in the reaction system, and were characterized via routine techniques. Compounds 1 and 2 are tetra-vanadium substituted {AsMoVI8VV4O40} clusters capped by two Co2+ or Cu2+ cations at two symmetrical pit positions of two opposite {Mo4O18} tetramers, and these represent the first tetra-vanadium substituted bi-cobalt(II)/copper(II) capped assemblies. The basic unit of compound 3 is one hexa-electron-reduced Keggin polyoxoanion {AsMoV6MoVI6O40} capped by two {VO5} units at the same positions. The adjacent basic units were bonded together via the square binuclear linker {Cu2(imi)4O2} to yield an infinite 1D cap-to-cap chain, which was further aggregated together in A–B–A–B mode via a pair of {Cu(1)(imi)2} linkers, forming an unique 2D layer. Compounds 1–3 show bifunctional electrocatalytic character and effective photocatalytic performance toward the degradation of typical dyes under UV irradiation.

Authors contributing to RSC publications (journal articles, books or book chapters)
do not need to formally request permission to reproduce material contained in this
article provided that the correct acknowledgement is given with the reproduced material.

Reproduced material should be attributed as follows:

For reproduction of material from NJC:
Reproduced from Ref. XX with permission from the Centre National de la Recherche
Scientifique (CNRS) and The Royal Society of Chemistry.

For reproduction of material from PCCP:
Reproduced from Ref. XX with permission from the PCCP Owner Societies.

For reproduction of material from PPS:
Reproduced from Ref. XX with permission from the European Society for Photobiology,
the European Photochemistry Association, and The Royal Society of Chemistry.

For reproduction of material from all other RSC journals and books:
Reproduced from Ref. XX with permission from The Royal Society of Chemistry.

If the material has been adapted instead of reproduced from the original RSC publication
"Reproduced from" can be substituted with "Adapted from".

In all cases the Ref. XX is the XXth reference in the list of references.

If you are the author of this article you do not need to formally request permission
to reproduce figures, diagrams etc. contained in this article in third party publications
or in a thesis or dissertation provided that the correct acknowledgement is given
with the reproduced material.

Reproduced material should be attributed as follows:

For reproduction of material from NJC:
[Original citation] - Reproduced by permission of The Royal Society of Chemistry (RSC) on behalf of the
Centre National de la Recherche Scientifique (CNRS) and the RSC

For reproduction of material from PCCP:
[Original citation] - Reproduced by permission of the PCCP Owner Societies

For reproduction of material from PPS:
[Original citation] - Reproduced by permission of The Royal Society of Chemistry (RSC) on behalf of the
European Society for Photobiology, the European Photochemistry Association, and
RSC

For reproduction of material from all other RSC journals:
[Original citation] - Reproduced by permission of The Royal Society of Chemistry

If you are the author of this article you still need to obtain permission to reproduce
the whole article in a third party publication with the exception of reproduction
of the whole article in a thesis or dissertation.

Information about reproducing material from RSC articles with different licences
is available on our Permission Requests page.